blob: ce1235742c1668938438f26dfe0f07156fe3d855 (plain
pam_wheel — Only permit root access to members of group wheel
The pam_wheel PAM module is used to enforce the so-called wheel group. By
default it permits root access to the system if the applicant user is a member
of the wheel group. If no group with this name exist, the module is using the
group with the group-ID 0.
Print debug information.
Reverse the sense of the auth operation: if the user is trying to get UID 0
access and is a member of the wheel group (or the group of the group
option), deny access. Conversely, if the user is not in the group, return
PAM_IGNORE (unless trust was also specified, in which case we return
Instead of checking the wheel or GID 0 groups, use the name group to
perform the authentication.
The check for wheel membership is done only when the target user UID is 0.
The pam_wheel module will return PAM_SUCCESS instead of PAM_IGNORE if the
user is a member of the wheel group (thus with a little play stacking the
modules the wheel members may be able to su to root without being prompted
for a passwd).
The check for wheel membership will be done against the current uid instead
of the original one (useful when jumping with su from one account to
another for example).
The root account gains access by default (rootok), only wheel members can
become root (wheel) but Unix authenticate non-root applicants.
su auth sufficient pam_rootok.so
su auth required pam_wheel.so
su auth required pam_unix.so
pam_wheel was written by Cristian Gafton <firstname.lastname@example.org>.